"I replace the alternator on my 07 Trailblazer at 115K, because I need to get a few more years out of it. My old alternator sounded as if it was about to go out. I purchased this product to swap it out before it left me stranded. It cam in and looked brand new out of the box. The 07 Trailblazer is not the easiest alternator I have ever replaced. Just not enough room to work. Also, flat rate shows it can be done in 0.6 hours, hum....no. After installation and putting on a new belt, it had the exact same noise. Sounded like an old shopping cart. Charged just fine hope it lasts. I would say get a alternator from a different manufacturer."posted by: chemistryhawk on October 1, 2012view all 1 reviews